Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) # SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) # I2C subsystem configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) menu "I2C support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) config I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 	tristate "I2C support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 	select RT_MUTEXES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 	select IRQ_DOMAIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 	  I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 	  many micro controller applications and developed by Philips.  SMBus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 	  or System Management Bus is a subset of the I2C protocol.  More
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	  information is contained in the directory <file:Documentation/i2c/>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	  especially in the file called "summary" there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	  Both I2C and SMBus are supported here. You will need this for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	  hardware sensors support, and also for Video For Linux support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	  If you want I2C support, you should say Y here and also to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	  specific driver for your bus adapter(s) below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	  This I2C support can also be built as a module.  If so, the module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	  will be called i2c-core.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) config ACPI_I2C_OPREGION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	bool "ACPI I2C Operation region support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	depends on I2C=y && ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	  Say Y here if you want to enable ACPI I2C operation region support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	  Operation Regions allow firmware (BIOS) code to access I2C slave devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	  such as smart batteries through an I2C host controller driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) if I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) config I2C_BOARDINFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) config I2C_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	bool "Enable compatibility bits for old user-space"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	  Say Y here if you intend to run lm-sensors 3.1.1 or older, or any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	  other user-space package which expects i2c adapters to be class
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	  devices. If you don't know, say Y.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) config I2C_CHARDEV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	tristate "I2C device interface"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	  Say Y here to use i2c-* device files, usually found in the /dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	  directory on your system.  They make it possible to have user-space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	  programs use the I2C bus.  Information on how to do this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	  contained in the file <file:Documentation/i2c/dev-interface.rst>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	  This support is also available as a module.  If so, the module 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	  will be called i2c-dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) config I2C_MUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	tristate "I2C bus multiplexing support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	  Say Y here if you want the I2C core to support the ability to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	  handle multiplexed I2C bus topologies, by presenting each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	  multiplexed segment as a I2C adapter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	  This support is also available as a module.  If so, the module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	  will be called i2c-mux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) source "drivers/i2c/muxes/Kconfig"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) config I2C_HELPER_AUTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	bool "Autoselect pertinent helper modules"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	  Some I2C bus drivers require so-called "I2C algorithm" modules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	  to work. These are basically software-only abstractions of generic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	  I2C interfaces. This option will autoselect them so that you don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	  have to care.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	  Unselect this only if you need to enable additional helper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	  modules, for example for use with external I2C bus drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	  In doubt, say Y.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) config I2C_SMBUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	  Say Y here if you want support for SMBus extensions to the I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	  specification. At the moment, two extensions are supported:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	  the SMBus Alert protocol and the SMBus Host Notify protocol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	  This support is also available as a module.  If so, the module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	  will be called i2c-smbus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) source "drivers/i2c/algos/Kconfig"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) source "drivers/i2c/busses/Kconfig"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) config I2C_STUB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	tristate "I2C/SMBus Test Stub"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	depends on m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	  This module may be useful to developers of SMBus client drivers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	  especially for certain kinds of sensor chips.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	  If you do build this module, be sure to read the notes and warnings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	  in <file:Documentation/i2c/i2c-stub.rst>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	  If you don't know what to do here, definitely say N.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) config I2C_SLAVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	bool "I2C slave support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	  This enables Linux to act as an I2C slave device. Note that your I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	  bus master driver also needs to support this functionality. Please
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	  read Documentation/i2c/slave-interface.rst for further details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if I2C_SLAVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) config I2C_SLAVE_EEPROM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	tristate "I2C eeprom slave driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	  This backend makes Linux behave like an I2C EEPROM. Please read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	  Documentation/i2c/slave-eeprom-backend.rst for further details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) config I2C_SLAVE_TESTUNIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	tristate "I2C eeprom testunit driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	  This backend can be used to trigger test cases for I2C bus masters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	  which require a remote device with certain capabilities, e.g.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	  multi-master, SMBus Host Notify, etc. Please read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	  Documentation/i2c/slave-testunit-backend.rst for further details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) config I2C_DEBUG_CORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	bool "I2C Core debugging messages"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	  Say Y here if you want the I2C core to produce a bunch of debug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	  messages to the system log.  Select this if you are having a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	  problem with I2C support and want to see more of what is going on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) config I2C_DEBUG_ALGO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	bool "I2C Algorithm debugging messages"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	  Say Y here if you want the I2C algorithm drivers to produce a bunch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	  of debug messages to the system log.  Select this if you are having
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	  a problem with I2C support and want to see more of what is going
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	  on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) config I2C_DEBUG_BUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	bool "I2C Bus debugging messages"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	depends on HAS_IOMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	  Say Y here if you want the I2C bus drivers to produce a bunch of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	  debug messages to the system log.  Select this if you are having
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	  a problem with I2C support and want to see more of what is going
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	  on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) endif # I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) endmenu